java lang ClassNotFoundException javax servlet jsp jstl core Config

Question

When I am run my application after entering the URL  this exception is coming I am using Eclipse and Tomcat7 0 35  I also added Jstl jar and jstl1 2 jar  My code is  java lang ClassNotFoundException  javax servlet jsp jstl core Config     at org apache catalina loader WebappClassLoader loadClass WebappClassLoader java 1714      at org apache catalina loader WebappClassLoader loadClass WebappClassLoader java 1559      at org apache myfaces view jsp JspViewDeclarationLanguage buildView JspViewDeclarationLanguage java 91      at org apache myfaces lifecycle RenderResponseExecutor execute RenderResponseExecutor java 78      at org apache myfaces lifecycle LifecycleImpl render LifecycleImpl java 241      at javax faces webapp FacesServlet service FacesServlet java 199      at org apache catalina core ApplicationFilterChain internalDoFilter ApplicationFilterChain java 305      at org apache catalina core ApplicationFilterChain doFilter ApplicationFilterChain java 210      at org apache catalina core StandardWrapperValve invoke StandardWrapperValve java 222      at org apache catalina core StandardContextValve invoke StandardContextValve java 123      at org apache catalina authenticator AuthenticatorBase invoke AuthenticatorBase java 472      at org apache catalina core StandardHostValve invoke StandardHostValve java 171      at org apache catalina valves ErrorReportValve invoke ErrorReportValve java 99      at org apache catalina valves AccessLogValve invoke AccessLogValve java 936      at org apache catalina core StandardEngineValve invoke StandardEngineValve java 118      at org apache catalina connector CoyoteAdapter service CoyoteAdapter java 407      at org apache coyote http11 AbstractHttp11Processor process AbstractHttp11Processor java 1004      at org apache coyote AbstractProtocol AbstractConnectionHandler process AbstractProtocol java 589      at org apache tomcat util net JIoEndpoint SocketProcessor run JIoEndpoint java 310      at java util concurrent ThreadPoolExecutor runWorker Unknown Source      at java util concurrent ThreadPoolExecutor Worker run Unknown Source      at java lang Thread run Unknown Source

User · Answer

The error is telling you it cannot find the class because it is not available in your application.

If you are using Maven, make sure you have the dependency for jstl artifact:

<dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
</dependency>

If you are not using it, just make sure you include the JAR in your classpath. See this answer for download links.

User · Answer

Download the following jars and add it to your WEB-INF lib directory    jsp-api-2 0 jar jstl-1 2 jar

User · Answer

Add JSTL library as dependency to your project  javax servlet jsp jstl core Config is a part of this package   For example  if you were using Gradle  you could write in a build gradle   dependencies       compile  javax servlet jstl 1 2

User · Answer

Just a quick comment  sometimes Maven does not copy the jstl- jar to the WEB-INF folder even if the pom xml has the entry for it   I had to manually copy the JSTL jar to  WEB-INF lib on the file system  That resolved the problem  The issue may be related to Maven war packaging plugin

User · Answer

By default  Tomcat container doesn   t contain any jstl library  To fix it  declares jstl jar in your Maven pom xml file if you are working in Maven project or add it to your application s classpath   lt dependency gt       lt groupId gt javax servlet lt  groupId gt       lt artifactId gt jstl lt  artifactId gt       lt version gt 1 2 lt  version gt     lt  dependency gt

User · Answer

Probably the jstl libraries are missing from your classpath not accessible by tomcat   You need to add at least the following jar files in your WEB-INF lib directory    jsf-impl jar  jsf-api jar  jstl jar

User · Answer

Add jstl jar to your application classpath

User · Answer

I had the same problem  Go to Project Properties -  Deployment Assemplbly and add jstl jar

[jsf] java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config

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